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Connector-less test setup for measurement of passive inter-modulation products at UHF band

  • Santhosh Kumar Ramagiri (a1), Arvind B. Shukla (a1), Ramaniklal B. Bavaria (a1), Surinder Singh (a1) and Kaushik S. Parikh (a1)...

Abstract

This paper describes the establishment of a test setup for measurement of passive inter-modulation (PIM) products generated by various device(s) under test (DUT(s)) (filters, coaxial cables etc.) at ultra high frequency (UHF) band. The paper begins with a brief discussion of an ideal PIM test setup using a quiet load. It then discusses the establishment of the setup in the absence of quiet load and demonstrates a PIM level of −192 dBc of the test setup. Finally it shows the PIM performance of a band-stop filter, a flexible cable, cascade of band-stop filter, and flexible cable, measured using the established test setup. These components are required for UHF payload of a communication satellite.

Copyright

Corresponding author

Corresponding author: S.K. Ramagiri Email: santhoshr@sac.isro.gov.in

References

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[1]Arazm, F.; Benson, F. A.: Nonlinearities in metal contacts at microwave frequencies. IEEE Trans. EMC, 22 (1980), 142149.
[2]Shands, T.D.; Denny, H.W.; Woody, J.A.: Intermodulation interference generated in coaxial cables and connectors, in IEEE National Symp. Electromagnetic Compatibility, San Antonio, 1984, 293297.
[3]Weinstein, D.: Passive Intermodulation Distortion in Connectors, Cable and Cable Assemblies, Amphenol Corporation, Communication and Network Products.
[4]Hienonen, S.: Studies on microwave antennas: passive intermodulation distortion in antenna structures and design of microstrip antenna elements, Doctor of Science in Technology Thesis, Helsinki University of Technology, Espoo, Finland, March 2005.
[5]Antkowiak, M.E.; Schraufnagl, C.: High Power Low Passive Intermodulataion Microwave Termination, US Patent 20110175690A1, July 21, 2011.
[6]Radcliffe, C.: Design of Low PIM Coaxial Diplexers, WHM IMS 2007.
[7]Macchiarella, G.; Sartorio, A.: Passive Intermodulation in Microwave Filters: Experimental Investigation, WMB-7: MTT-S Workshop on Filter II: Practical Aspects of Microwave Filter Design and Realization.
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[9]Henrie, J.; Christianson, A.; Chappell, W. J.: cancellation of passive intermodulation distortion in microwave networks, in Proc. EMC, October. 2008, 11531156.

Keywords

Connector-less test setup for measurement of passive inter-modulation products at UHF band

  • Santhosh Kumar Ramagiri (a1), Arvind B. Shukla (a1), Ramaniklal B. Bavaria (a1), Surinder Singh (a1) and Kaushik S. Parikh (a1)...

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